I need the little copper washers that go on my cylinder head bolts. The bike is a 1979 cm400T, but CB400t will work as well. I kinda lost some of them Or if anyone has any information on sourcing them or making my own. Thanks!

Called crush washers. lots of bolt places will have them. If you know the Bolt size, http://www.vintagecb750.com/ has them for a lot of bikes. There is a lot of cross over as the bolt sizes are similar on a lot of bikes.